Parasite-induced behavioural changes to the trade-off between foraging and predator evasion in a marine snail

► Trophic interactions in ecological communities induce trait-mediated interactions. ► The role of parasites in trait-mediated interactions is rarely discussed. ► Trematodes affect the time to initiate anti-predator responses of the host. ► Parasites can interfere with predator-induced trait-mediated interactions.